finally add folder support via folder.meta is_album field

src/commands/process.rs

@@ -50,7 +50,19 @@ fn rename_file(process_args: &ProcessCommandArgs, file: &mut File) {
 	let artist = artist.replace('/', &replace_char);
 
 	// Step 4: Join Filename
-	let filename = format!("{} - {}", artist, title);
+	let filename = match file.folder_meta.is_album {
+		true => {
+			format!(
+				"{}. {} - {}",
+				file.info.tags.track_number.unwrap(),
+				title,
+				artist
+			)
+		}
+		false => {
+			format!("{} - {}", artist, title)
+		}
+	};
 
 	if filename == file.filename {
 		return;

src/types.rs

@@ -1,5 +1,7 @@
 use std::path::PathBuf;
 
+use serde::Deserialize;
+
 use crate::utils::format_detection::FileFormat;
 
 #[derive(Debug, Clone)]
@@ -69,6 +71,8 @@ pub struct File {
 	pub extra_files: Vec<File>,
 
 	pub info: AudioFileInfo,
+
+	pub folder_meta: FolderMeta,
 }
 
 impl File {
@@ -105,6 +109,7 @@ impl File {
 			path_to,
 			extra_files: Vec::new(),
 			info: AudioFileInfo::default(),
+			folder_meta: FolderMeta::default(),
 		}
 	}
 
@@ -118,3 +123,19 @@ impl File {
 		PathBuf::from(&self.path_from_source).join(self.join_filename())
 	}
 }
+
+#[derive(Debug, Clone, Deserialize, Default)]
+pub struct FolderMeta {
+	pub is_album: bool,
+}
+
+impl FolderMeta {
+	pub fn load(path: &PathBuf) -> Result<FolderMeta, Box<dyn std::error::Error>> {
+		let file = std::fs::File::open(path)?;
+		let reader = std::io::BufReader::new(file);
+
+		let u: FolderMeta =
+			serde_yaml::from_reader(reader).expect("error while reading folder meta");
+		Ok(u)
+	}
+}

src/utils/formats/handlers/id3.rs

@@ -30,7 +30,10 @@ impl FormatHandler for ID3AudioFormat {
 		Ok(Tags {
 			title: String::from(title.unwrap()),
 			artist: String::from(artist.unwrap()),
-			track_number: self.id3_tags.track().map(|track_number| track_number as u64),
+			track_number: self
+				.id3_tags
+				.track()
+				.map(|track_number| track_number as u64),
 		})
 	}
 

src/utils/music_scanner.rs

@@ -1,6 +1,6 @@
-use std::fs;
+use std::{fs, path::PathBuf};
 
-use crate::types::File;
+use crate::types::{File, FolderMeta};
 use walkdir::WalkDir;
 
 use super::is_supported_file;
@@ -39,6 +39,7 @@ pub fn scan_for_music(src_dir: &String) -> Result<Vec<File>, Box<dyn std::error:
 	for entry in WalkDir::new(src_dir) {
 		let entry = entry.unwrap();
 		let entry_path = entry.into_path();
+
 		if entry_path.is_dir() {
 			continue;
 		}
@@ -46,6 +47,13 @@ pub fn scan_for_music(src_dir: &String) -> Result<Vec<File>, Box<dyn std::error:
 		if is_supported_file(&entry_path) {
 			let mut file = File::from_path(src_dir.clone(), entry_path.clone());
 
+			let mut folder_meta_path = PathBuf::from(entry_path.parent().unwrap().clone());
+			folder_meta_path.push("folder.meta");
+
+			if folder_meta_path.exists() {
+				file.folder_meta = FolderMeta::load(&folder_meta_path)?;
+			}
+
 			file.extra_files
 				.extend(find_extra_files(src_dir.clone(), &file)?);